...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Food and bioprocess technology >Microencapsulation of Garlic Extract by Complex Coacervation Using Whey Protein Isolate/Chitosan and Gum Arabic/Chitosan as Wall Materials: Influence of Anionic Biopolymers on the Physicochemical and Structural Properties of Microparticles
【24h】

Microencapsulation of Garlic Extract by Complex Coacervation Using Whey Protein Isolate/Chitosan and Gum Arabic/Chitosan as Wall Materials: Influence of Anionic Biopolymers on the Physicochemical and Structural Properties of Microparticles

机译：用乳清蛋白分离/壳聚糖和胶阿拉米甲烷/壳聚糖作为壁材料的复杂凝聚物通过复合凝聚物的微观胶囊：阴离子生物聚合物对微粒的物理化学和结构性能的影响

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The aim of this study was to encapsulate garlic extract by complex coacervation method using whey protein isolate (WPI)/chitosan (CH) and gum Arabic (GA)/CH as wall materials. Two anionic biopolymers (GA and WPI) were used to find the most suitable wall materials to interact electrostatically with cationic CH. The complex coacervates were freeze-dried to obtain microparticles powders. The microparticles were examined for the nitrogen adsorption/desorption, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), differential scanning calorimeter (DSC), sorption isotherms, zeta potential, antioxidant activity, total phenolic content, solubility, moisture content, hygroscopicity, size distribution, and water activity. X-ray diffractograms evidenced microparticles with amorphous structure. WPI/CH and GA/CH microparticles showed surface area of 2.23 and 2.40 m(2) g(-1) and mean pore diameter of 5.20 and 5.37 nm, respectively. The nitrogen adsorption/desorption assay showed that microparticles presented mesopores and macropores that resulted in quick completion of microparticles surface monolayer with nitrogen. The sorption characteristics of microparticles followed the type II isotherm and Guggenheim-Anderson-de Boer (GAB) model was the best model to fit the experimental data. FTIR spectrum of microparticles reveals physical interactions between garlic compounds and functional groups of wall materials, indicating that garlic compounds were intact and encapsulated. TGA results indicated that the wall materials were effective in protecting the garlic sensitive compounds. The negative carboxyl groups (-COO-) of GAwere better than WPI for coacervation with positive amino groups (NH3+) of chitosan in terms of less hygroscopicity, smaller particle size, and higher retention of garlic phenolic compounds.
机译：本研究的目的是通过使用乳清蛋白分离物（WPI）/壳聚糖（CH）和胶阿拉伯（GA）/ CH作为壁材料来包封通过复杂的凝聚方法封装大蒜提取物。使用两个阴离子生物聚合物（GA和WPI）来找到最合适的壁材料与阳离子CH静电相互作用。将复合的凝聚层冷冻干燥，得到微粒粉末。检查微粒用于氮吸附/解吸，傅里叶变换红外光谱（FTIR），X射线衍射（XRD），热重分析（TGA），差示扫描量热计（DSC），吸附等温线，Zeta电位，抗氧化活性，总数酚类含量，溶解度，水分含量，吸湿性，尺寸分布和水活性。 X射线衍射图证明了具有无定形结构的微粒。 WPI / CH和GA / CH微粒显示表面积为2.23和2.40m（2）g（-1）和平均孔径为5.20和5.37nm。氮吸附/解吸测定显示微粒呈现了中孔和大孔，其导致微粒表面单层与氮气进行快速完成。微粒的吸附特性遵循II型等温线和Guggenheim-Anderson-de Booler（GAB）模型是适合实验数据的最佳模型。微粒的FTIR光谱揭示了大蒜化合物和壁材料的官能团之间的物理相互作用，表明蒜类化合物完好并包封。 TGA结果表明，壁材料有效保护大蒜敏感化合物。从含有壳聚糖的凝聚氨基（NH 3 +）的凝聚性均匀的WPI的阴性羧基（-COO-）优于壳聚糖的浓度，较小的吸湿性，更小的粒度和大蒜酚类化合物的保留更高。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号